The Kenwood SM-220 Station Monitor is a multi-function monitor scope which functions as a band-scope (with optional BS-5 module), monitor and tone generator. It is the ideal product for supporting, monitoring and calibrating equipment in radio stations. It can be used to observe SSB distortion, CW key clicks, and test linearity of linear amplifiers. It has four sweep ranges. It also can serve as a RTTY tuning scope. Frequency range: 1.8-150 MHz. Maximum Power: 2000W 1.8-54 MHz and 100W 150 MHz (see manual for other power restrictions). IF Frequency: 455 kHz.